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____ [38]
2 years ago
6

All of the following are equal to Avogadro's number EXCEPT ____. a. the number of atoms of bromine in 1 mol Br2 b. the number of

atoms of gold in 1 mol Au c. the number of molecules of nitrogen in 1 mol N2 d. the number of molecules of carbon monoxide in 1 mol CO
Chemistry
1 answer:
Colt1911 [192]2 years ago
8 0

All the following are equal to Avogadro's number EXCEPT a. the number of atoms of bromine in 1 mol Br₂.

1 mol Br₂ contains Avogadro’s number of molecules of Br₂.

However, each molecule contains two atoms of Br, so there are

<em>2 × Avogadro’s number of Br atoms </em>in 1 mol Br₂.

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Answer:

240 seconds

Explanation:

Data Given:

Distance Radio travel to earth = 7.19 ×10⁷ km

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Solution:

First convert Km to m

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7.19 ×10⁷ km = 7.19 ×10⁷ x 1000 = 7.19 × 10¹⁰m

Formula used to calculate time

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rearrange above equation for time

            time (t) = distance (d) / Speed (S) . . . . . . . . .(1)

Put values in equation 1

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So 240 seconds it take for the signal to reach the earth

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2 years ago
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